photon

Paper	Title	Other Keywords	Page
MOPA01	Summary of the Control System Cyber-Security (CS)2/HEP Workshop	controls, synchrotron, monitoring, factory	18
	S. Lueders CERN, Geneva
	Over the last few years modern accelerator and experiment control systems have increasingly been based on commercial-off-the-shelf products (VME crates, PLCs, SCADA systems, etc.), on Windows or Linux PCs, and on communication infrastructures using Ethernet and TCP/IP. Despite the benefits coming with this (r)evolution, new vulnerabilities are inherited, too: Worms and viruses spread within seconds via the Ethernet cable, and attackers are becoming interested in control systems. Unfortunately, control PCs cannot be patched as fast as office PCs. Even worse, vulnerability scans at CERN using standard IT tools have shown that commercial automation systems lack fundamental security precautions: Some systems crashed during the scan, others could easily be stopped or their process data be altered. The (CS)2/HEP workshop held the week-end before ICALEPCS2007 was intended to present, share, and discuss countermeasures deployed in HEP laboratories in order to secure control systems. This presentation will give a summary overview of the solution planned, deployed and the experience gained.
	Slides
TOAA05	Implementation, Commissioning and Current Status of the Diamond Light Source Control System	controls, diagnostics, linac, simulation	56
	M. G. Abbott, K. A.R. Baker, T. M. Cobb, P. N. Denison, P. Gibbons, I. J. Gillingham, A. Gonias, P. Hamadyk, S. C. Lay, P. J. Leicester, M. R. Pearson, U. K. Pederson, N. P. Rees, A. J. Rose, J. Rowland, E. L. Shepherd, S. J. Singleton, I. Uzun, M. T. Heron Diamond, Oxfordshire A. J. Foster OSL, Cambridge S. Hunt AHB, Meisterschwanden P. H. Owens STFC/DL, Daresbury, Warrington, Cheshire
	Starting with the Linac in 2005, the commissioning of the Diamond Light Source accelerators and photon beamlines, together with their related control systems, progressed to an aggressive program such that as of early in 2007, the facility was available for first users with a suite of beamlines and experiment stations. The implementation and commissioning of the control system to meet the overall project objectives are presented. The current status of the control system, including ongoing developments for electron-beam orbit stability and future photon beamline requirements, are also described.
	Slides
TPPA10	Development of Photon Beamline and Motion Control Software at Diamond Light Source	controls, simulation, diagnostics, site	108
	T. M. Cobb, P. N. Denison, N. P. Rees Diamond, Oxfordshire
	Diamond Light Source has opened its first eight photon beamlines to the user community this year. We have developed the control software for the beamlines in parallel, adopting a common set of standards, tools, and designs across all beamlines. At the core of the control system is the EPICS toolset and the widespread use of the Delta Tau PMAC motion controller. The latter is a complex, but flexible controller that has met our needs both for simple and complex systems. We describe how we have developed the standard EPICS software for this controller so that we can use the existing EPICS interfaces, but also enables us to use the more advanced features of the controller.
TPPB32	EPICS at the Synchrotron Radiation Source DELTA	controls, synchrotron, undulator, diagnostics	232
	S. Doering, U. Berges DELTA, Dortmund
	Since 1999 the control system at the synchrotron radiation source DELTA, located at the University of Dortmund, Germany, has operated under EPICS. The change from a nonstandard, handmade system to EPICS has been made stepwise till 2001. Since 2002 the first two beamlines in the soft X-ray region are also operated under EPICS to benefit from the easy communication with the accelerator control system. A complete plane-grating-monochromator-beamline (PGM-beamline U55) with its experiment is operated under EPICS, including the stepper motors and device readout. A toroidal-grating-monochromator-beamline (TGM-beamline) has been completely changed from an old system into EPICS control system. At both beamlines new photon-bpm-readout systems under a LINUX-PC and EPICS from the company ENZ are tested. Also a compact stepper motor driver unit with a small LINUX-PC has succesfully been developed in this cooperation. DELTA works as a test facility for these new developments. The easy and fast exchange of the necessary data with the machine control system is an advantage as is the benefit from the EPICS community.
WOPA05	Evolution of Visual DCT	controls, feedback, background	313
	M. Sekoranja, I. Verstovsek, J. Bobnar Cosylab, Ljubljana
	Visual DCT (Visual Database Configuration Tool) became the most advanced and popular graphical EPICS database configuration tool for creating, editing and debugging EPICS databases. EPICS is a widely used control system based on a real-time database configured via ASCII files. The most recent development achievements in Eclipse IDE, which is also a RCP application portable to many operating systems since it is written in Java, brought another perspective to development of Visual DCT. Using Eclipse GEF (Graphical Editing Framework) for graphical features and EMF (Eclipse Modeling Framework) for database code generation makes it possible for Visual DCT to become a part of the Eclipse IDE. Using Eclipse as the framework for application automatically adds common features as plug-in support, debugging tools and many others. In addition, Visual DCT could be used as a part of the CSS (Control System Studio) allowing easy handling of EPICS databases using MB3 (mouse button 3) and drag and drop functionalities.
	Slides
WPPB34	Information Technology Security at the Advanced Photon Source	controls, target, monitoring	463
	W. P. McDowell, K. V. Sidorowicz ANL, Argonne, Illinois
	The proliferation of “bot” nets, phishing schemes, denial-of-service attacks, root kits, and other cyber attack schemes designed to capture a system or network creates a climate of worry for system administrators, especially for those managing accelerator and large experimental-physics facilities as they are very public targets. This paper will describe the steps being taken at the Advanced Photon Source (APS) to protect the infrastructure of the overall network with emphasis on security for the APS control system.
WPPB37	Fast BPM DAQ System Using Windows Oscilloscope-based EPICS IOC	linac, controls, feedback, factory	469
	K. Furukawa, T. Suwada, M. Satoh KEK, Ibaraki T. Kudou, S. Kusano MELCO SC, Tsukuba J. W. Wang USTC, Hefei, Anhui
	The non-destructive beam position monitor (BPM) is an indispensable diagnostic tool for the stable beam operation. In the KEK linac, approximately nineteen BPMs with the strip-line type electrodes are used for the beam orbit measurement and orbit feedback. In addition, some of them are also used for the beam energy feedback loops. The current DAQ system consists of the digital oscilloscopes and the VME computers. They are connected with the GPIB, and a signal from each electrode is analyzed with a predetermined response function once per second by a VME computer that is connected to the upper-layer control servers via Ethernet. The KEKB injector linac is planned to be upgraded to perform the simultaneous injection for 4-rings. In this operation mode, a fast DAQ system is strongly required. In the current system, maximum DAQ rate is strictly limited by the oscilloscope performance, and it should be improved for the 50-Hz measurement. For these reasons, we made the decision to replace the current DAQ system with the fast digital oscilloscope. In this paper, we will present the system description of the new DAQ system, and the detailed result of the performance test will be presented.
RPPA15	Initial Performance Results of the APS P0 Feedback System	feedback, controls, storage-ring, single-bunch	550
	C. Yao, N. P. Di Monte ANL, Argonne, Illinois
	The Advanced Photon Source electron beam exhibits transverse instability when a large amount of charge is present in a single bunch. The P0 feedback system stabilizes the transverse motion of the beam under these circumstances. The initial requirement was to stabilize a single bunch of electrons in the horizontal plane. By implementing the stabilizer in an FPGA and using the parallel processing capabilities provided by this hardware, it is possible to stabilize 324 bunches per turn in both the horizontal and vertical planes. The stabilizer consists of 648 32-tap finite impulse response filters. This paper discusses the challenges in achieving this performance and some issues in interfacing to a Coldfire IOC running RTEMS. Initial test results of the system response are presented.
RPPA19	Photon Diagnostic Station for TAC IR-FEL Test Facility	diagnostics, undulator, laser, electron	556
	I. Tapan UU, Bursa
	The Turkic Accelerator Center (TAC) project has been accepted by Turkish government. According to this project, a linac-based infrared oscillator free electron laser (FEL) will be constructed as a TAC test facility by the end of 2010. Planning work has been ongoing for the firt FEL facility building in Turkey. Both 20- and 40-MeV electron energies will be used to obtain infrared photons in the wavelength region of 1 to 100 micrometers. The IR FEL photons generated by two undulators will be transported through the respestive two photon beam lines to the experimental hall, where they are fed in to eight experimental station. Photon diagnostic station will be located in the experimental hall to measure the properties of the photon beam. In this work, the performance of the designed IR-FEL photon diagnostic station for the TAC test facility has been discussed.
RPPA20	A Fast Orbit Feedback for the ELETTRA Storage Ring	feedback, controls, electron, injection	558
	D. Bulfone, V. Forchi', G. Gaio, L. Pivetta, M. Lonza ELETTRA, Basovizza, Trieste
	A fast global orbit feedback using digital Beam Position Monitor (BPM) detectors has been installed and commissioned at Elettra. The system uses 96 BPMs and 82 steerer magnets to correct closed orbit errors at a 10-kHz repetition rate. The feedback processing is performed by twelve VME stations equipped with commercial CPU boards running the Linux operating system with real-time extension and connected to each other by a low-latency fiber optic network. The system is fully controlled by a Tango based control system. A number of diagnostic and visualization software tools have been developed to easily operate the feedback and detect anomalous sources of orbit distortion. The operational experience and the achieved results are presented. Plans for further improvements of orbit stability are also discussed.
RPPA25	The Data Acquisition System (DAQ) of the FLASH Facility	controls, monitoring, feedback, laser	564
	K. Rehlich, R. Rybnikov, R. Kammering DESY, Hamburg
	Nowadays the photon science experiments and the machines providing these photon beams produce enormous amounts of data. To capture the data from the photon science experiments and from the machine itself, we developed a novel Data AcQusition (DAQ) system for the FLASH (Free electron LASer in Hamburg) facility. Meanwhile the system is not only fully integrated into the DOOCS control system, but is also the core for a number of essential machine-related feedback loops and monitoring tasks. A central DAQ server records and stores the data of more than 900 channels with 1-MHz up to 2-GHz sampling and several images from the photon science experiments with a typical frame rate of 5 Hz. On this server all data are synchronized on a bunch basis which makes this the perfect location to attach, e.g., high-level feedbacks and calculations. An overview of the architecture of the DAQ system and its interconnections within the complex of the FLASH facility together with the status of the DAQ system and possible future extensions/applications will be given.
RPPA29	A Feed-Forward Procedure to Counteract Orbit Distortions and Photon Beam Displacements from Insertion Device Operation at the SLS	insertion, insertion-device, electron, undulator	573
	T. Schmidt, A. Streun, D. Zimoch, J. T.M. Chrin PSI, Villigen
	Insertion devices of various types provide light of high brilliance to experimenters at the SLS beamlines. Changes in the photon energy and polarization by movement of the ID gap and phase shift, however, cause orbit distortions that result in a displacement of the photon beam in both angle and position at the beamline. A feed-forward correction scheme has been developed to quantify and precisely correct these effects using designated correctors local to the photon source. The corrector settings are determined using an orbit configuration consisting of 73 digital BPMs and associated correctors; recently commissioned X-ray BPMs located at the beamline front-end are also included in the correction algorithmn and serve to constrain the photon beam to its specified position. The feed-forward table is finally implemented at the local processor level and applied at a rate of 10 Hz. A photon pointing stability at the sub-microradian level is achieved. The entire gap scan, feed-forward generation and subsequent verification can now be completed within 15 to 60 minutes depending on the complexity of the ID. The methodology of the procedure and high-level software framework is described.
RPPB11	EPICS CA Gateway Employment in the BEPCII Network	controls, monitoring, linac	627
	J. Liu, C. H. Wang, Y. H. Wang, Z. Zhao, X. H. Huang IHEP Beijing, Beijing
	The control network of the BEPCII is divided into two separate different subnets. In order to access IOC PVs between the separate subnets as well as IOC PVs from the campus network, we adopt EPICS CA gateway in the BEPCII network. This paper describes the EPICS CA gateway employment and network management in the BEPCII .
RPPB34	Global Search Tool for the Advanced Photon Source Integrated Relational Model of Installed Systems (IRMIS) Database	controls, background, SNS	683
	M. B. Cianciarulo Purdue University, West Lafayette, Indiana D. E.R. Quock ANL, Argonne, Illinois
	The Integrated Relational Model of Installed Systems (IRMIS) is a relational database tool that has been implemented at the Advanced Photon Source to maintain an updated account of approximately 600 control system software applications, 400,000 process variables, and 30,000 control system hardware components. To effectively display this large amount of control system information to operators and engineers, IRMIS was initially built with nine Web-based viewers: Applications Organizing Index, IOC, PLC, Component Type, Installed Components, Network, Controls Spares, Process Variables, and Cables. However, since each viewer is designed to provide details from only one major category of the control system, the necessity for a one-stop global search tool for the entire database became apparent. The user requirements for extremely fast database search time and ease of navigation through search results led to the choice of Asynchronous JavaScript and XML (AJAX) technology in the implementation of the IRMIS global search tool. Unique features of the global search tool include a two-tier level of displayed search results, and a database data integrity validation and reporting mechanism.
RPPB35	Administration of Control Systems at the Advanced Photon Source Using Applications Organizing Index	controls, linac, booster, storage-ring	686
	N. D. Arnold, D. E.R. Quock ANL, Argonne, Illinois
	Applications Organizing Index (AOI) is a relational database tool that has been implemented at the Advanced Photon Source (APS) to aid in the management of more than 600 unique control system applications. AOI provides control system developers an intuitive view of and navigation links to the components that make up a single control system such as source code files, operator displays, process variables, work history notes, programmable components, validation procedures, drawings, and more. The foundation for the Applications Organizing Index tool is the collaborative effort between several Experimental Physics and Industrial Control System (EPICS) sites to build the common relational database schema for documenting large and complex particle accelerator control systems, Integrated Relational Model of Installed Systems (IRMIS). This paper describes the evolution of AOI as it became populated with APS control systems component data and as users’ requests for new features of AOI became apparent.